Spark intensifier



Sep: 15. 1925 1.553,703

J; W. MANLEY SPARK INTENSIF IER Filed June 12, 1923 3M ucufoz Patente'd Sept. 15, 1925.

Jonawmannmu' fimeescxnanomassmmnior sPARx :Nrnmnmmu Application flled Inne 12, 19723. Serial No. 644,927.

T aZ whom z't myroonce'm:

Be it known that I, JOHN W. MANLEY, a

"I citizen of the United States, residing` at tains to make and use the same.

This invention relates to a spark intensifier particularly adapted for use in connection with spark plugs as employed in the ignition circuit of internal combustion en` gines.

It is primarily aimed to struction which is foul-proo In attaining the said object it is further aimed to provide a construction in which the electrodes orl parts at the gap ,will not burn or corrode, a construction in which the gap' will be maintained of the same length under all conditions, whereby cleaning and adjustment are obviated.

Another object is to provide a construction in which the electrodes or points are of silver steel and preferably arched at their gap end's.

Additional objects and. advantages will become apparent from a consideration of the description following taken in connection with accompanying drawings illustrating an o rative embodiment.

In sai drawings:

Figure 1 is a perspective view showing the parts of my invention, and

Figure 2 is a Vertical sectionalview showing the said parts attached to a spark plug.

provide a con- Like reference characters designate like or similar parts in both views.

In carrymg out the invention, an attaching plate or bar 10 is utilized having an opening 11 by means of which it may receive the binding post 13 of a spark plug 14, being secured to the binding post by the usual nuts 15 thereon vand which usuallyV secure the ignition Wire to'the plug. Plate 610 may be made of any suitable conducting material but is preferably of copper. Overlapping one end of the plate 10 is t i :a base 16, of suitable insulating material and preferably red indurated fiber. i

An electrode 17 has a post 18 which ex' .tenis 'leeeretly ahmegh a Web-sr 1% the base 16, an opening in the plate 10 and which isV fastened in place by a nut 20 threaded on said post .18. On the opposite i end of electrode 17 is a laterally extending .upwardly arched point 21, preferably of the metal Vknown commei'cially as silver steel and which is an alloy entirely or principally of silver and steel.

A point 22 coacts with the point 21 and like it being preferably made of silver steel and arched downwardly as shown, and terminating short of the point 21 to provide a spark gap at 23, the electrode of which point 22 forms part being completed by a post- 24 which passes removably through a washer 25, the base 16, and has a nut 26 threaded thereon and engages the lower surface of the base.

The washers 19 and 25 are preferably of different heights or thicknesses as shown and the former is preferably of white inclurated fiber while the latter is preferably ofv black indurated fiber so as to distinguish the two Aand also to distinguish them from the color of the base 16, as an aid in the attachment of the device to spark plugs.

Instead of the ignition wire being fastened to the spark plug at the post 15, it is fastened to the post 24, preferably being clamped against the nut 26 by a nut 27 also threaded on said post 24.

As the result of this construction, the electric current from any suitable source instead of passing directly to the plug 15 will pass from its source through the post 24, point 22, jump the gap 23, point 21, post 14, plate 10 and thence through the spark plug in coaction with the grouuded side of the plug as usual. By reason of the invention, the plug'associated with the same I believe will deliver at least 45% more electric currentv than a spark coil will deliver through thev plug; The particular arching of thepoint aids to this end. Also the point being made of silver steel, and being arched, will leo not foul and will remain clean, maintain the spark gap of the same length and unaltered and will overcome the necessity of adjustment.

I claim:

An intensifier of the class described hav-V ng a base of insulating material, electrodes carried by the base and having stems eX- tendng therethrough, coacting points of ,silver steel extending from the stems and having points at the gap arehed towards each othei` and chsposed in coactlng relation,

-Washers through which the stems pass located Vintermediate the points and the base, said washers being of unequal thieknesses, nuts screW-threaded on said stems at the side of the base opposite to the washer's.,V an attaohing, plate 'const-itutng a conductor secured to the device by one 'of the nuts, and

'the other nut alnd stem constituting a binding post for the Circuit wires.

In Vtestimony Whereof I aflix my signature.

JOHN W. -MANLEY. 

